Twisting exerciser

ABSTRACT

A twisting exerciser includes a base and a first pivot assembly and a second pivot assembly are respectively connected to the base. A first extension is rotatably connected to the first pivot assembly and a handlebar unit is connected to the first extension. A knee support unit is rotatably connected to the second extension which is rotatably connected to the second pivot assembly. Two support members are connected to the knee support unit.

FIELD OF THE INVENTION

The present invention relates to a twisting exerciser with two separate pivot assemblies which are connected to the handlebar unit and the knee support unit respectively.

BACKGROUND OF THE INVENTION

A conventional twisting exerciser generally includes a base with four legs and a pivot assembly is connected on the base. The handlebar and the knee support unit are connected to the pivot assembly. The user puts his or her knees on the knee support unit and holds the handlebar, and twist his or her body to swing the handlebar in one direction and the legs in an opposite direction. A resistance is generated in the pivot assembly and the user has to overcome the resistance to twist his or her body. However, the single pivot assembly has to bear all the load of the user's body and cannot have a longer term of use. Besides, the twisting exerciser occupies a lot of space which is precious for most of the users.

The present invention intends to provide a twisting exerciser which includes two pivot assemblies for connecting the handlebar unit and the knee support unit respectively. The legs and the hands can be pivoted when not in use so as to save the space for storage.

SUMMARY OF THE INVENTION

The present invention relates to a twisting exerciser which comprises a base having two first legs and two second legs. A first pivot assembly and a second pivot assembly are respectively connected to the base. Each of the first and second pivot assemblies has a pivot and a sleeve which is rotatably connected to the pivot. A first extension is connected to the sleeve on the first pivot assembly and is connected to a handlebar unit. A second extension is connected to the sleeve on the second pivot assembly and is connected to a knee support unit.

The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view to show the twisting exerciser of the present invention;

FIG. 2 is an exploded view to show the twisting exerciser of the present invention;

FIG. 3 is an exploded view to show the first pivot assembly of the twisting exerciser of the present invention;

FIG. 4 is a cross sectional view to show the first and second pivot assemblies of the present invention;

FIG. 5 is a top view to show the twisting exerciser of the present invention;

FIG. 6 shows that knee support unit is adjustably moved along the second extension, and

FIG. 7 shows that the first legs and the handlebar unit are pivoted when not in use.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1 to 5, the twisting exerciser of the present invention comprises a base 10 which has a connection member 11 connected to an underside of a front end thereof so as to be connected to two first legs 12. Two bolts 13 (only one is shown) extend through the connection members 11 to fix the two first legs 12. Two second legs 14 are connected to a rear end of the base 10.

A first pivot assembly 20 is connected to the base 10 and has a first pivot 21 and a first sleeve 22 which is rotatably mounted to the first pivot 21. A first extension 224 is connected to the first sleeve 22 and a handlebar unit 40 is connected to the first extension 224. The handlebar unit 40 includes a C-shaped holding member 41 which is fixed on the first extension 224 and a handlebar 42 is securely connected to the holding member 41 by extending a bolt 43 through two sides of the open end of the holding member 41.

The first pivot 21 includes a first threaded hole 211 defined in an end thereof and a first flange 212 extends radially outward from the first pivot 21. The first flange 212 is rested on a top of the base 10 when the first pivot 21 is connected to the base 10. The first sleeve 22 has a first axial passage 221 in which the first pivot 21 extends. The first sleeve 22 includes two recesses 222 defined in a top end and a bottom end thereof and the inner diameter of the two recesses 222 is larger than the diameter of the first threaded hole 211. Two first bearings 223 are engaged with the two recesses 222 and mounted on the first pivot 21. A first positioning disk 23 is rested on the first bearing 223 in the recess 222 of the top end of the first sleeve 22 and mounted on the first pivot 21. A plurality of first protrusions 231 extend from a top surface of the first positioning disk 23. A first lining 24 is mounted to the first pivot 22 and has an outer diameter the same as that of the first sleeve 22. A bottom surface of the first lining 24 is rested on the first positioning disk 23. The first lining 24 has a first hole 241 which is located corresponding to the first axial passage 221. A plurality of first notches 242 are defined in the first lining 24 so as to receive the first protrusions 231. A first washer 25 has a diameter the same as that of the first lining 24 and is rested on the first lining 24. The first washer 25 has a second hole 251 which is located corresponding to the first hole 241. A first top cap 26 is rested on the first washer 25 and has a first through hole 261 which is located corresponding to the second hole 251. A first bolt 27 has a first head 271 and a first shank 272 which extends through the first through hole 261, the second hole 251, the first hole 241 and is connected with the first threaded hole 211 of the first pivot 21. The first head 271 compresses the first lining 24 so as to generate resistance when the first extension 224 and handlebar unit 40 are rotated.

A second pivot assembly 30 is connected to the base 10 and has a second pivot 31 and a second sleeve 32 which is rotatably mounted to the second pivot 31. A second extension 324 is connected to the second sleeve 32 and includes a plurality of positioning holes 3241. A knee support unit 50 is connected to one of the positioning holes 3241 in the second extension 324. Two support members 54 are connected to the knee support unit 50.

The second pivot 31 includes a second threaded hole 311 defined in an end thereof and a second flange 312 extends radially outward from the second pivot 31. The second flange 312 is rested on a top of the base 10 when the second pivot 31 is connected to the base 10. The second sleeve 32 has a second axial passage 321 in which the second pivot 31 extends. The second sleeve 32 includes two recesses 322 defined in a top end and a bottom end thereof. The inner diameter of the two recesses 322 is larger than the diameter of the second threaded hole 311. Two second bearings 323 are engaged with the two recesses 322 and mounted on the second pivot 31. A second positioning disk 33 is rested on the second bearing 323 in the recess 322 of the top end of the second sleeve 32 and is mounted on the second pivot 31. A plurality of second protrusions 331 extend from a top surface of the second positioning disk 33. A second lining 34 is mounted to the second pivot 32 and has an outer diameter the same as that of the second sleeve 32. A bottom surface of the second lining 34 is rested on the second positioning disk 33. The second lining 34 has a third hole 341 which is located corresponding to the second axial passage 321. A plurality of second notches 342 are defined in the second lining 34 so as to receive the second protrusions 331. A second washer 35 has a diameter the same as that of the second lining 34 and is rested on the second lining 34. The second washer 35 has a fourth hole 351 which is located corresponding to the third hole 341. A second top cap 36 is rested on the second washer 35 and has a second through hole 361 which is located corresponding to the fourth hole 351. A second bolt 37 has a second head 371 and a second shank 372 which extends through the second through hole 361, the fourth hole 351, the third hole 341 and is connected with the second threaded hole 311 of the second pivot 31. The second head 371 of the second bolt 37 compresses the second lining 34 so as to generate resistance when rotating the second extension 324 and the knee support unit 50.

The knee support unit 50 includes a frame 51 connected to an underside thereof so as to be mounted on the second extension 324. A bridge member 53 is connected between the two support members 54 and a bolt 52 extends through the bridge member 53 and is connected with one of the positioning holes 3241 of the second extension 324. The position of the knee support unit 50 can be adjusted along the second extension 324 by connecting the bolt 52 with one of the positioning holes 3241 as shown in FIG. 6.

As shown in FIG. 7, the handlebar 42 can be pivoted toward the first and second pivot assemblies 20, 30 by loosening the C-shaped holding member 41, and the two first legs 12 can be pivoted toward the second legs 14 by loosening the bolts 13. By this way, the twisting exerciser occupies less space.

While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention. 

1-3. (canceled)
 4. A twisting exerciser comprising: a base having two first legs and two second legs connected thereto; a first pivot assembly connected to the base and having a first pivot, wherein the first pivot includes a first threaded hole defined in an end thereof and a first flange extends radially outward from the first pivot, the first flange rested on a top of the base, a first sleeve has a first axial passage in which the first pivot extends, the first sleeve includes two recesses defined in a top end and a bottom end thereof and two first bearings are engaged with the two recesses and mounted on the first pivot, a first positioning disk is rested on the first bearing in the recess of the top end of the first sleeve and mounted on the first pivot, a plurality of first protrusions extend from a top surface of the first positioning disk, a first lining is mounted to the first pivot and has a diameter the same as that of the first sleeve, a bottom surface of the first lining is rested on the first positioning disk, the first lining has a first hole which is located corresponding to the first axial passage, a plurality of first notches are defined in the first lining so as to receive the first protrusions, a first washer has a diameter the same as that of the first lining and is rested on the first lining, the first washer has a second hole which is located corresponding to the first hole, a first top cap is rested on the first washer and has a first through hole which is located corresponding to the second hole, a first bolt having a first head and a first shank which extends through the first through hole, the second hole, the first hole and is connected with the first threaded hole of the first pivot, the first head compresses the first lining, a first extension connected to the first sleeve and a handlebar unit connected to the first extension; and a second pivot assembly connected to the base and having a second pivot and a second sleeve which is rotatably mounted to the second pivot, a second extension connected to the second sleeve and a knee support unit connected to the second extension, two support members connected to the knee support unit.
 5. A twisting exerciser comprising: a base having two first legs and two second legs connected thereto; a first pivot assembly connected to the base and having a first pivot, a first extension connected to the first sleeve and a handlebar unit connected to the first extension; and a second pivot assembly connected to the base and having a second pivot and a second sleeve which is rotatably mounted to the second pivot, wherein the second pivot includes a second threaded hole defined in an end thereof and a second flange extends radially outward from the second pivot, the second flange is rested on a top of the base, a second sleeve has a second axial passage in which the second pivot extends, the second sleeve includes two recesses defined in a top end and a bottom end thereof and two second bearings are engaged with the two recesses and mounted on the second pivot, a second positioning disk is rested on the second bearing in the recess of the top end of the second sleeve and mounted on the second pivot, a plurality of second protrusions extend from a top surface of the second positioning disk, a second lining is mounted to the second pivot and has a diameter the same as that of the second sleeve, a bottom surface of the second lining is rested on the second positioning disk, the second lining has a third hole which is located corresponding to the second axial passage, a plurality of second notches are defined in the second lining so as to receive the second protrusions, a second washer has a diameter the same as that of the third lining and is rested on the second lining, the second washer has a fourth hole which is located corresponding to the third hole, a second top cap is rested on the second washer and has a second through hole which is located corresponding to the fourth hole, a second bolt having a second head and a second shank which extends through the second through hole, the fourth hole, the third hole and is connected with the second threaded hole of the second pivot, the second head of the second bolt compresses the second lining, a second extension connected to the second sleeve, the second extension includes a plurality of positioning holes defined therein, and a knee support unit connected to the second extension, two support members connected to the knee support unit. 